EP1521397A2 - Lokalisierung der Eingangspunkte eines Datenflusses in einem Kommunikationsnetz - Google Patents

Lokalisierung der Eingangspunkte eines Datenflusses in einem Kommunikationsnetz Download PDF

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Publication number
EP1521397A2
EP1521397A2 EP04292310A EP04292310A EP1521397A2 EP 1521397 A2 EP1521397 A2 EP 1521397A2 EP 04292310 A EP04292310 A EP 04292310A EP 04292310 A EP04292310 A EP 04292310A EP 1521397 A2 EP1521397 A2 EP 1521397A2
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EP
European Patent Office
Prior art keywords
network
identifier
configuration parameter
parameter
configuration
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP04292310A
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English (en)
French (fr)
Other versions
EP1521397A3 (de
Inventor
Gérard Delegue
Olivier Martinot
Stéphane Betge-Brezetz
Emmanuel Marilly
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Alcatel Lucent SAS
Original Assignee
Alcatel SA
Nokia Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Alcatel SA, Nokia Inc filed Critical Alcatel SA
Publication of EP1521397A2 publication Critical patent/EP1521397A2/de
Publication of EP1521397A3 publication Critical patent/EP1521397A3/de
Withdrawn legal-status Critical Current

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L63/00—Network architectures or network communication protocols for network security
    • H04L63/14—Network architectures or network communication protocols for network security for detecting or protecting against malicious traffic
    • H04L63/1441—Countermeasures against malicious traffic
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L41/00—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
    • H04L41/06—Management of faults, events, alarms or notifications
    • H04L41/0681—Configuration of triggering conditions
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L43/00—Arrangements for monitoring or testing data switching networks
    • H04L43/02—Capturing of monitoring data
    • H04L43/028—Capturing of monitoring data by filtering
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L41/00—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
    • H04L41/22—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks comprising specially adapted graphical user interfaces [GUI]

Definitions

  • the invention relates to the field of communication networks, and more precisely the control of data packet flow access to communication networks.
  • the operator once the operator has determined each entry point of a flow, it must determine the input interface used in each of said entry points. To do this, the operator must determine the paths taken by the stream by examining jump after jump the traces it left in the neighboring routers. If such traces do not exist, the operator is forced to install protocol analyzers between network links. In all cases, the operator must perform many operations manually, during which customers of his network are deprived of the quality of service which is due to them and / or the network is left without defense.
  • the invention therefore aims to improve the situation.
  • a device for detecting the flow of packets of data for peripheral equipment of a communications network equipped with a network management system, including means of detection to compare the parameters contained in the headers of the packets of the streams that reach the input interfaces of the equipment device (associated respectively with interface identifiers), least one configuration parameter received from (or designated by) the system of network management and associated with a parameter identifier. So when header parameter of a packet, a stream received on one of the input interfaces peripheral equipment, is identical to the configuration parameter received (or designated), the detection means generate for the system of network management an alarm message including the identifier of the interface input that received this stream and the parameter identifier.
  • the detection means are preferably arranged in order to stop comparing the contents of the header fields to a configuration parameter chosen when they receive the management system from a message requiring the stopping of this comparison.
  • the configuration parameter may for example consist of a source address and a destination address, or a protocol identifier, or a DSCP identifier.
  • Such a detection device can be installed in a housing intended for be connected to a network peripheral equipment, such as a router peripheral (or “edge router”), or it can be directly integrated into network equipment, such as a peripheral router.
  • a network peripheral equipment such as a router peripheral (or “edge router")
  • edge router or “edge router”
  • the invention also proposes a location management device for a network management system of a communications network including peripheral equipment with input interfaces for receiving data packet flows and associated respectively to interface identifiers.
  • This management system is characterized by the fact that it includes means of processing to generate, for some at least peripheral devices of the network, configuration messages comprising at least one configuration parameter and instructions requiring the transmission, in case of detection, of the identifier of the interface input having received a stream comprising a packet whose header includes a parameter identical to the configuration parameter.
  • the management device may include a graphical interface allowing a user to communicate a parameter of configuration to its processing means, so that they can generate a Configuration message with this configuration parameter.
  • the management device can include loaded extraction means, when they receive a request to obtain a configuration parameter representative of a stream received by a network equipment designated by an identifier, to access the management information base (or MIB for "Management Information Base ") of this designated equipment, storing certain parameters contained in the header of the packets of the received stream, so as to extract at least one of these parameters then to transmit it to the means of treatment so that they can generate a configuration message with this parameter of configuration.
  • MIB Management Information Base
  • the means of treatment can be arranged when they receive a configuration parameter representative of a selected stream, to access this memory so as to identify the identifiers of the peripheral equipment to which be sent the configuration messages containing the parameter of received configuration, and then forward these configuration messages to peripheral equipment concerned.
  • the graphic interface may be suitable for allowing a user to select from a list of peripheral devices each Peripheral equipment to detect and then communicate each peripheral equipment identifier selected to the means of processing for the generation of a configuration message including said configuration parameter.
  • the graphical interface is preferentially coupled to a memory (network topology) of the network management system in which the identifiers of the Peripheral equipment allowing the access of flows to the network.
  • the management device may also include means for collection when they receive an alarm message from peripheral equipment and having an input interface identifier and a configuration parameter identifier, to order the means of processing to generate for this peripheral equipment a message requiring the stop of the detection of flows containing the parameter of configuration received.
  • the management device may also to include loaded time delay means, whenever the processing means receive a request to generate a message stop, to initiate the countdown of a chosen duration, then at the end of to authorize the processing means to transmit this stop message to destination of the peripheral equipment concerned.
  • the object of the invention is to enable the detection of entry points of flow of data packets in managed communications networks.
  • managed network means a network comprising a management system network or NMS (for "Network Management System”).
  • the communications network is at least partly of the Internet (IP) type.
  • IP Internet
  • the invention applies to other types of network, such as for example transmission networks of the WDM, SONET or SDH type, to networks of ATM type data, or classical or mobile voice networks, or yet to mixed voice-data networks such as NGN type networks. It also applies to the transport layer, and in particular TCP streams and UDP, as well as the ICMP protocol.
  • IP network a multidomain context constituted a sum of domains and / or IP subdomains connected to each other. other.
  • Internet network N can be likened to a core, comprising a set network equipment (or nodes) RPi and RC connected to each other to ensure the routing of the data packets they receive, and to set of communication terminals (not shown), connected to certain network equipment (or nodes) RPi, possibly via one or several other access server type terminals, so as to exchange between them data packets.
  • the term “communication terminal” means any equipment for network capable of exchanging data packets, such as a laptop or landline, landline or mobile phone, personal assistant digital (or PDA for "Personal Digital Assistant"), or a server.
  • edge routers or “edge routers”
  • RPi 1 to 3, but it can take any value greater than or equal to two
  • core routers routers of heart
  • the communication terminals are each connected to one of the peripheral routers RPi, which serves as their access node N network, and RPi peripheral routers are generally interconnected via one or more RC heart routers.
  • each domain or subdomain owns its own RPi routers and its own RC heart routers.
  • the equipment of network are called "Label Switch Routers" and appear either under the form of routers, either in the form of ATM switches controlled by a routing function.
  • the network N also comprises a network management system or NMS (for "Network Management System") coupled, in particular, with its RPi and RC network equipment.
  • NMS Network Management System
  • This NMS network management system also known as the network operating system, allows in particular network manager (or supervisor) to manage network equipment RPi and RC that constitute it.
  • the network equipment RPi and RC are arranged to be able to exchange data according to a management protocol of network with the NMS management system, such as the protocol SNMP (for "Simple Network Management Protocol” RFC 2571-2580).
  • SNMP for "Simple Network Management Protocol” RFC 2571-2580.
  • other network management protocols can be used, and including CLI, TL1, CORBA or CMISE / CMIP.
  • an operator must, in many situations, to be able to determine not only each node RP input through which a particular stream has entered its N network but also the input interface of this input node.
  • the invention is intended to allow such a determination.
  • a management DG location shown in Figure 1 and implemented in the management system NMS of an N network, and detection devices DD illustrated in FIG. located in (or connected to) RPi peripheral equipment of the network NOT.
  • a detection device DD is intended to observe flows received by peripheral equipment, such as a peripheral router RPi, to detect those with packages whose header includes at least one configuration parameter chosen.
  • the DD detection devices are implanted in peripheral routers RP i. But, alternatively, they could include a housing intended to be coupled with RPi peripheral equipment.
  • a detection device DD comprises more specifically a detection module MA preferably comprising a observation module MO and a module for generating alarm messages MGMA.
  • the observation (or filtering) module MO is coupled to the interfaces input of its RP peripheral router, which are respectively associated with interface identifiers that differentiate them each other. He is responsible for observing the flows as his peripheral router RP receives on its IE interfaces to compare parameters (or characteristics), which are contained in the headers of the stream packets received, at least one configuration parameter received or designated by its identifier (of parameter).
  • the configuration parameter or the configuration parameter identifier is passed to the routers devices affected by the NMS network management system and more precisely by its location management device DG.
  • the configuration parameter can consist of an address source and a destination address, or a protocol identifier, or still a DSCP identifier, for example. But, it can also be consisting of a TCP or UDP header, or a message type identifier in the case of the ICMP protocol.
  • Each packet, from a stream arriving on an IE input interface of a peripheral router RPi, is therefore the subject of a parameter analysis which are contained in its header fields.
  • the observation module MO warns the module of generation of MGMA alarm messages. The latter then generates, at destination of the NMS network management system, and more specifically to destination of the DG location management device, an alarm message including the identifier of the IE input interface that received this stream and the identifier of the configuration parameter concerned.
  • the configuration parameters are passed to the MA detection of DD detection devices by the management device of DG localization, via the N network and using commands adapted to the (x) protocol (s) for managing their respective RPi peripheral routers (for example SNMP or CLI).
  • the DG location management device comprises for this purpose, all first, an MT processing module (also known as a configuration) to generate configuration messages at the destination at least some of the peripheral routers RPi of the network N.
  • an MT processing module also known as a configuration
  • Each configuration message includes at least one parameter configuration (or its identifier) and instructions that require a module detection device that it configures itself so as, on the one hand, to filter (or compare) the contents of the headers of the packets of the streams received by its router RPi device, and secondly, to transmit the identifier of the interface input IE which has received a stream comprising a packet whose header includes a parameter identical to the configuration parameter contained (or identified) in the configuration message.
  • a configuration message is thus, in a way, a filter flow that a DD detection device must use.
  • the same message (or filter) configuration may have several configuration parameters (or configuration parameter identifiers) that must be applied (or used) jointly.
  • the same DD detection device can be arranged to use multiple filters in parallel, to monitor streams with different characteristics (or parameters).
  • Configuration parameters can be provided to the processing module MT in at least two ways.
  • a first way, illustrated in particular in FIG. provide the DG location management device with a graphical interface user, type GUI (for "Graphical User Interface”).
  • type GUI for "Graphical User Interface”
  • Such an interface GUI allows a user (such as a network administrator) to communicate one or more configuration parameters to the module of MT treatment.
  • the DG location management device is coupled to a memory MM including the definition of the network topology N.
  • This MM memory is usually part of the NMS management system, so that it is sufficient to couple it to the DG location management module so that it can use at least some of its content.
  • the processing module MT can for example propose a list of routers to the operator who can then validate or refuse this list.
  • the processing module MT must be coupled to the memory MM.
  • the task can even be omitted when one decides to systematically address all RPi peripheral routers of the network N each configuration message.
  • the processing module MT has not more than generate its configuration message and then send it through the network management system NMS to said routers.
  • a second way, illustrated in Figure 3, is to provide the DG location management device of an extraction module of parameter (s) ME, coupled at least to the processing module MT.
  • Such an extraction module ME is loaded when it receives a request to obtain a configuration parameter representative of a stream that has been received by a network equipment RPi or RC, designated by its identifier of network, access its management information database (or MIB for Management Information Base), or to connect to it (via a "log"), to determine at least one of the parameters of the designated received stream.
  • the MIB is particularly useful because it always stores certain parameters contained in the header of the packets of the streams that are received by his equipment RPi or RC network. In addition, it is directly accessible to the NMS network management.
  • the ME extraction module can transmit it (s) to the processing module MT to generate its configuration message.
  • the extraction module ME can transmit the parameters (or identifiers) extracted from the equipment RPi or RC network to GUI GUI so that the administrator can control and / or select at least one of them before the communicate to the MT processing module (after any selection of RPi peripheral routers responsible for its (or their) detection).
  • the processing module MT Once in possession of the configuration parameter, representative (or characteristic) of the stream to be detected, and routers identifiers RPi devices to perform the detection (after a possible selection in the memory MM), the processing module MT only has to generate its configuration message and then send it through the management system NMS network to said routers.
  • the DG location management device can also include a collection module MC coupled to its processing module MT, as well as in preference to its GUI GUI (when equipped).
  • This collection module MC is loaded when it receives a message alarm generated by the MGMA alarm generation module of a router RPi device and having an IE input interface identifier and a configuration parameter identifier, to order to the processing module MT to generate a message requiring the stop of the flow detection characterized by this configuration parameter.
  • the processing module MT is therefore also arranged to generate a stop message to RPi peripheral equipment that has just detected a stream whose packets include in their header the configuration parameter communicated by the MC collection module. This deactivates the corresponding filtering at the level of the peripheral router RPi concerned and thus to avoid that its DD detection device transmits the same message several times alarm to signal the arrival in its peripheral router RPi of the same flow already detected.
  • the detection device DD and more precisely its observation module MO, is arranged to deactivate the filter comprising the configuration parameter designated by a received stop message.
  • the observation module MO stops compare packet headers to the corresponding configuration parameter.
  • the disabling filtering frees up CPU CPU time RPi peripheral equipment and therefore devote this CPU to other tasks.
  • the collection module MC is advantageously sent a message indicating that he has received a message alarm signaling the entry into the network N of a flow comprising a parameter configuration (identified by its identifier), on an input interface (identified by its identifier) of a peripheral router RPi (identified by its ID).
  • the administrator of the network N thus knowing what is the point entry (or IE input interface) of the flow, it can trigger actions appropriate using the NMS Network Management System.
  • the management device of DG location includes a timer T coupled to its module of MT treatment.
  • This timer T is responsible for initiating (or launching) the count of a chosen duration each time the MT processing module receives a request to generate a stop message from the module MC collection.
  • the timer T address to the processing module MT a message (or signal) authorizing it to transmit its stop message to the peripheral equipment concerned.
  • the DD device detection device RPi may optionally include a delay, preferably configurable by the DG management device, in order to disable automatically a filtering previously established when a chosen duration has passed.
  • the detection device DD can be realized in the form of electronic circuits, software modules (or computer), or a combination of circuits and software.
  • the invention is not limited to device embodiments of detection, location management device and management method of location described above, only as an example, but encompasses all the variants that can be considered by those skilled in the art in the context of claims below.

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  • Engineering & Computer Science (AREA)
  • Computer Security & Cryptography (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Computer Hardware Design (AREA)
  • Computing Systems (AREA)
  • General Engineering & Computer Science (AREA)
  • Data Exchanges In Wide-Area Networks (AREA)
EP04292310A 2003-09-30 2004-09-27 Lokalisierung der Eingangspunkte eines Datenflusses in einem Kommunikationsnetz Withdrawn EP1521397A3 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0311410A FR2860369B1 (fr) 2003-09-30 2003-09-30 Localisation de points d'entree de flux dans un reseau de communications
FR0311410 2003-09-30

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EP1521397A2 true EP1521397A2 (de) 2005-04-06
EP1521397A3 EP1521397A3 (de) 2009-05-06

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EP04292310A Withdrawn EP1521397A3 (de) 2003-09-30 2004-09-27 Lokalisierung der Eingangspunkte eines Datenflusses in einem Kommunikationsnetz

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US (1) US20050091371A1 (de)
EP (1) EP1521397A3 (de)
FR (1) FR2860369B1 (de)

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CN100395994C (zh) * 2005-06-23 2008-06-18 华为技术有限公司 自动交换光网络中通道故障的处理方法
US7881238B2 (en) * 2005-06-30 2011-02-01 Microsoft Corporation Efficient formation of ad hoc networks
EP3291636B1 (de) 2007-10-25 2020-04-29 Cisco Technology, Inc. Kooperatives gateway für mobile knoten
US8483620B2 (en) * 2008-02-07 2013-07-09 Qualcomm Incorporated Asynchronous interference management
US20090203320A1 (en) * 2008-02-07 2009-08-13 Qualcomm Incorporated Asynchronous interference management based on timeslot overlap
US9094986B2 (en) * 2008-02-07 2015-07-28 Qualcomm, Incorporated Synchronous and asynchronous interference management
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Also Published As

Publication number Publication date
EP1521397A3 (de) 2009-05-06
FR2860369B1 (fr) 2006-02-03
FR2860369A1 (fr) 2005-04-01
US20050091371A1 (en) 2005-04-28

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